Appliance adapted to revolve brushes, grind in valves, and other purposes



March 27, 1926. 1,663, 27

H. .DOBSON I APPLIANCE ADAPTED TO REVOLVE BRUSHES, GRIND-IN VALVES, ANDOTHER PURPOSES Filed Feb. 9. 1927 Patented Mar.

\ outrun sures;

. HERBERT DOBSON, or roirrsmou'rrr; ENGLAND.

APPLIANCE ADAPTED TO nnvonvn mwsnas, enm'n in VALVES, AND ornunrunros'ns.

Application filed February 9, 1927, Serial No. 167,054, and in GreatBritain February 11, 1926.

This invention relates to an apparatus adapted for revolving brushes,grinding in valves of internal combustion enginesand divers other uses,and has for its object to provide a device capable of being operated byone hand.

A further object of this invention is to provide an apparatus for thepurpose referred to, which has few working parts, very robust, being asmall and neatarticle.

A still further object of this invention is to provide an apparatus forsecuring a shaving'brush, a tooth brush, a ladys rouge pull, a mop forcleaning pans or jugs, a bottle brush, a screw driver end piecelforgrinding in valves and numerous other uses wherein a rotary motion isrequired.

In the accompanying drawing Fig. 1, is a sectional elevation of theapparat-us;

Fig. 2, is an elevation of the hollow casing;

lgig. 3, is a plan View of the propellant, an

Fig. l, is a detail of the guide piece.

According to this invention I provide a hollow tubular casing 1 with afemale thread 1 at each end, the lower end of said hollow casing 1,adapted to receive a removable screw plug 3, and the upper end of saidcasing 1 receives a removable screw plug 4, which latter, has a centralaperture through which passes a s indle 5. spindle 5 within t e hollowcasing 1, is of a spiral shape as shown at 5 in Fig. 1, or may beprovided with a spiral groove, said spindles) is rotatable along thevertical axis of said hollow casing 1, being supported at the base bymeans of a central recess 3 formed in the plug 3.

Inserted over the spiral portion 5 of the spindle 5 is a propellant 6with an aperture 6 shaped to move along the spiral 5 the outer end ofwhich projects radially outwards through elongated slots 7 cut in thecasing 1 wherein the propellant 6 is held against rotation, but willmove laterally so that rotary motionsis imparted to the spindle 5. Saidpropellant 6 has integral therewith, a steadying guide 8 adapted toslide within the hollow casing 1, and said propellant 6 is normally heldat the upper end of the spiral 5 or the spindle 5 by means of a helicalspring 9, interposed between the plug 3 and A part of the steadyingguide 8 within the hollow casing 1 as shewn in Fig. 1.

A collar 10, is inserted over the spindle 5, to take up end thrust andto prevent the spindle 5, being ejected from the hollow casing 1 A jawchuck 11 is secured to the outer end of the spindle 5 for the purpose ofattaching any one of the hereinbefore mentioned articles.

The apparatus is operated as follows The article to be rotated issecured to the jaw chuck 10 in a well known manner, and the device canbe operated by one hand, by means of the fingers of a persons handpassing around the wings of the propellant 6, on closing of the fingersmoves along the slots 7, imparting a rotary motion to the spindle 5 inone direction, and on opening 1 the fingers the propellant 6 will againmove back to its normal position by the action of the spring 9, andsimultaneously impart a rotary motion to the spindle 5 in a reversedirection and so on, thereby applying a continuous rotary movement firstin one direction and then in the reverse to the spindle 5.

I claim,

1. An apparatus for imparting a rotary motion comprising a hollowcasing, a removable plug at the base, a second removable plug at theupper end, a central orifice in the latter, a spindle passing throughsaid orifice, a recess provided in the said lower removable plug, thelower end of said spindle adapted to fit therein, a spiral groove formedon the greater part of the spindle within said casing, 21 propellantengaging with said spiral groove, elongated apertures in said casing,the wings of said. propellant projecting therethrough being held againstrotation, said propellant moving axially imparting rotary motion to saidspindle in one direction, a helical spring interposed between saidpropellant and lower plug res spectively within said casing impartingrotary motion to the spindle in a reverse di rection, and a thrustcollar being provided to prevent said spindle being ejected from thecasing.

2. An apparatus for imparting rotary motion comprising a hollow casing,radially disposed elongated apertures therein, a removable screw plug atthe base and upper end of said casing, a central orifice in said upperplug, a spindle passing through said upper plug, a spiral groove on saidspindle, a recess on said lower screw plug adapted to support the baseof said spindle along the axis of said casing, a propellant insertedover said spiral groove, the outer ends of said propellant projectingthrough said elongated apertures, a steadying guide integral with saidpropellant, a helical spring interposed between the steadying guide andlower screw plug re- 10 In testimony whereof I have hereunto set 5 myhand.

HERBERT DOBSON.

